Format

Send to

Choose Destination
See comment in PubMed Commons below
Science. 2009 Dec 18;326(5960):1704-7. doi: 10.1126/science.1181661. Epub 2009 Nov 26.

On the origin of species by natural and sexual selection.

Author information

1
Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501, USA. sander.vandoorn@iee.unibe.ch

Abstract

Ecological speciation is considered an adaptive response to selection for local adaptation. However, besides suitable ecological conditions, the process requires assortative mating to protect the nascent species from homogenization by gene flow. By means of a simple model, we demonstrate that disruptive ecological selection favors the evolution of sexual preferences for ornaments that signal local adaptation. Such preferences induce assortative mating with respect to ecological characters and enhance the strength of disruptive selection. Natural and sexual selection thus work in concert to achieve local adaptation and reproductive isolation, even in the presence of substantial gene flow. The resulting speciation process ensues without the divergence of mating preferences, avoiding problems that have plagued previous models of speciation by sexual selection.

PMID:
19965377
DOI:
10.1126/science.1181661
[Indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Support Center